/usr/include/Poco/Net/ICMPPacketImpl.h is in libpoco-dev 1.3.6p1-5.1build1.
This file is owned by root:root, with mode 0o644.
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// ICMPPacketImpl.h
//
// $Id: //poco/1.3/Net/include/Poco/Net/ICMPPacketImpl.h#1 $
//
// Library: Net
// Package: ICMP
// Module: ICMPPacketImpl
//
// Definition of the ICMPPacketImpl class.
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#ifndef Net_ICMPPacketImpl_INCLUDED
#define Net_ICMPPacketImpl_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Net/Socket.h"
namespace Poco {
namespace Net {
class Net_API ICMPPacketImpl
/// This is the abstract class for ICMP packet implementations.
{
public:
ICMPPacketImpl(int dataSize = 48);
/// Constructor. Creates an ICMPPacketImpl.
virtual ~ICMPPacketImpl();
/// Destructor.
const Poco::UInt8* packet(bool init = true);
/// Returns raw ICMP packet.
/// ICMP header and data are included in the packet.
/// If init is true, initPacket() is called.
virtual int packetSize() const = 0;
/// Returns the total size of packet (ICMP header + data) in number of octets.
/// Must be overriden.
virtual int maxPacketSize() const;
/// Returns the maximum permitted size of packet in number of octets.
Poco::UInt16 sequence() const;
/// Returns the most recent sequence number generated.
void setDataSize(int dataSize);
/// Sets data size.
int getDataSize() const;
/// Returns data size.
virtual struct timeval time(Poco::UInt8* buffer = 0, int length = 0) const = 0;
/// Returns current epoch time if either argument is equal to zero.
/// Otherwise, it extracts the time value from the supplied buffer.
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual bool validReplyID(unsigned char* buffer, int length) const = 0;
/// Returns true if the extracted id is recognized
/// (i.e. equals the process id).
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual std::string errorDescription(Poco::UInt8* buffer, int length) = 0;
/// Returns error description string.
/// If supplied buffer contains an ICMP echo reply packet, an
/// empty string is returned indicating the absence of error.
///
/// Supplied buffer includes IP header, ICMP header and data.
/// Must be overriden.
virtual std::string typeDescription(int typeId) = 0;
/// Returns the description of the packet type.
/// Must be overriden.
static const Poco::UInt16 MAX_PACKET_SIZE;
static const Poco::UInt16 MAX_SEQ_VALUE;
protected:
Poco::UInt16 nextSequence();
/// Increments sequence number and returns the new value.
void resetSequence();
/// Resets the sequence to zero.
virtual void initPacket() = 0;
/// (Re)assembles the packet.
/// Must be overriden.
Poco::UInt16 checksum(Poco::UInt16 *addr, Poco::Int32 len);
/// Calculates the checksum for supplied buffer.
private:
Poco::UInt16 _seq;
Poco::UInt8* _pPacket;
int _dataSize;
};
//
// inlines
//
inline Poco::UInt16 ICMPPacketImpl::sequence() const
{
return _seq;
}
inline Poco::UInt16 ICMPPacketImpl::nextSequence()
{
return ++_seq;
}
inline void ICMPPacketImpl::resetSequence()
{
_seq = 0;
}
inline int ICMPPacketImpl::maxPacketSize() const
{
return MAX_PACKET_SIZE;
}
} } // namespace Poco::Net
#endif // Net_ICMPPacketImpl_INCLUDED
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